Classical conditioning is a learning process that involves creating associations between a naturally occurring stimulus and a previously neutral stimulus. The most famous experiment demonstrating classical conditioning was conducted by Ivan Pavlov, who used dogs in his research.
In Pavlov's experiment, the sound of a bell was paired with the presentation of food to the dogs. Over time, the dogs learned to associate the sound of the bell with food, leading them to salivate whenever they heard the bell, even without the food present. This phenomenon is an example of a learned response to a previously neutral stimulus.
Based on this context, which of the following terms describes the learned reaction of the dogs when they salivate at the sound of the bell?